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Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Hi Dell Community,

Please help me to diagnose what is wrong with my new laptop.

My Laptop is Dell Latitude E6440 but every time i connect external monitor to my laptop HDMI port via HDMI to VGA converter, the external monitor always blink randomly every couple of seconds. This HDMI to VGA converter is working fine when i used it to other laptop.

Currently i still don't have chance to try my laptop HDMI port to connect directly to HDMI monitor because i don't have it.

Are there anybody have the same problem with me? thanks for your help.

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19 Replies
Community Manager
Community Manager

RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Hi M. Zemmy Indrapatih,

Thanks for your post.

Sorry you are having difficulties with your laptop and monitor.  If you could send me the name and model cable adapter you are using and the name and model of the monitor,  I might be better able to understand the issue.  Thanks

Regards,
Robert


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sunk818
Phosphor

RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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What's the other laptop model? What VGA monitor are you connecting to?

You are best getting a new monitor with HDMI connector.

As you noticed, a HDMI to VGA converter has to convert the digital signal to analog. It may not work with all equipment. 

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Bearlaw
Copper

RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Hi Robert,

I thought I might jump in here, as I am having the same issues as Zemmy. At work I was issued an e6440, and had the same problem.  The IT department swapped it out with another of the same model, new cables etc... and the problem has not gone away.

Updated windows etc...

It would seem that it is a hardware issue.

Any Insight on how to fix?

B

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RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Hi,

I'm running into the same problem here. VGA seems to work fine but when I use an HDMI for an extended desktop, the Monitor will start flickering on and off. This seems to only happen when the laptop is connected to a charger. 

We are running Latitude e6440s and it is a problem for more than 1 device. 

A solution to this would be greatly appreciated.

Thanks

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RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Dear all

I'm also having a E6440 where the display starts flickering are being in use for some minutes. It only happen if I connect via HDMI and it happens on two different displays.

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MPSMary
Copper

RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Have you tried adapting hdmi to dvi. I haven't tried this yet but don't want to spend the $$$'s if it doesnt solve the problem.

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RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Thanks for the hint to use HDMI (laptop) to DVI (display) adapter. It works neither. Yesterday Dell changed my motherboard. Still the same issue.

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Bearlaw
Copper

RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Hey All,

I've noted something that seems to work pretty well.

  • The HDMI output blinks when the laptop is fully charged, with the AC power plugged in.
  • Unplug the AC adapter, and the display stops blinking.
  • When the battery is drained, & AC is plugged in, the screen does not blink.
  • When the battery is fully charged, the display begins to blink again....

I've been able to use this as an interim solution, (unplugging the power from the back of the machine, and plugging it back in back in a few times during the day)... until Dell figures it out.

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RE: Latitude E6440 display blink when connect to external monitor via hdmi to VGA converter

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Hmm... i will try this solution..  Smiley Very Happy   But if this works, too bad its still not fix the problem.   Smiley Sad
Do you think this is hardware issue or software issue?
Does anyone have tried to test it on different OS? Like windows 7/Windows 8 or Windows 10?

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